Welcome! “Alien Life” tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. You may notice that this and future entries are shorter than usual; Career, family and book deal commitments have forced me to cut back some of my projects. Now, here’s today’s news:
g Abodes - The 200 known planets that orbit other stars exhibit incredible variety. Among them are a handful of worlds that weigh between 5 and 15 times Earth. Astronomers believe these "super-Earths" are rocky iceballs rather than gas giants like Jupiter. While theorists can explain how such worlds form around Sun-like stars, the discovery of super-Earths around tiny red dwarf stars was surprising. New research suggests that some super-Earths build up rapidly when local temperatures drop and ices condense out of the surrounding gas. See article.
g Life - Microbes may compete with large animal scavengers by producing repugnant chemicals that deter higher species from consuming valuable food resources - such as decaying meat, seeds and fruit, a new study suggests. See http://www.sciencedaily.com/releases/2006/11/061101150731.htm.
g Intelligence - Sensory experiments along with other recent studies are revealing that sea cows aren't so stupid after all. See http://www
.livescience.com/animalworld/061110_ap_manatee_smart.html.
g Message - The first episode of “I Love Lucy” was broadcast sometime on Oct. 15, 1951. About 0.0002 seconds later, the signal glided over the rooftops of the farthest city suburbs, and headed into space. It’s still going. Every day, that first installment passes through an additional 4 thousand trillion trillion trillion cubic kilometers of the cosmos. Given that stars in our galactic neighborhood are separated by about 4 light-years, it’s easy to figure that roughly 10 thousand star systems have been exposed to “I Love Lucy” in the past five decades. That may suggest a high Nielson rating, but the chance that extraterrestrials are now hooked on 1950s television is low. See http://www.space.com/searchforlife/seti_shostak_tv_061109.html.
g Cosmicus - Space technology could be used to create some sort of "shade" for the entire planet that would save us from global warming. See http://www.space.com/businesstechnology/technovel_sunshade
_061111.html.
The Drake Equation
This formula estimates the number of intelligent civilizations in our galaxy.N=(R*)(Ns)(Fp)(Ne)(Fl)(Fi)(Fc)(L)
Where:- N = Number of civilizations we can communicate with
- R* = Average star formation rate
- Ns = Percentage of stars capable of supporting earth-like planets
- Fp = Percentage of those stars with planets
- Ne = Average umber of planets in those stars' habitable zones
- Fl = Percentage of those planets where life begins
- Fi = Percentage of planets with life where an intelligent species evolves
- Fc = Percentage of those intelligent species that develop communication technology
- L = Average lifetime, in years, of a civilization that develops such technology
About Me
- Rob Bignell
- I'm the owner and chief editor at Inventing Reality Editing Service, which meets the editing and proofreading needs of writers both new and published. For more than two decades, I worked as an award-winning journalist, with half of those years spent as an editor. Several of my short stories in the literary and science fiction genres have been published, and I am the author of the nonfiction “Hikes with Tykes” series, a novel "Windmill", and a collection of poetry, "Love Letters to Sophie's Mom". For seven years I worked as an English teacher or a community college journalism instructor. I hold a master's degree in English and a bachelor's in journalism and English.